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Specification: 1. Accuracy: ±0.2 degrees 2. Abnormal automatic alarm: flashing +"Di Di" sound 3. Automatic measurement: measuring distance 5cm ~ 10cm 4. Screen: Digital display 5. Charging method:USB charging or battery(18650 Li-ion) 6. Install method: nail hook, double-sided adhesive sticking, bracket fixing 7. Environment temperature: 10℃ ~40℃ (Recommended 15℃~35℃ ) 8. Infrared measuring range: 0~ 50℃ 9. Response time: 0.5s 10. Input: DC 4.2-5V 11. Weight: 350g 12. Dimensions: 170* 115* 140mm 13. Standby: About one week